Show simple item record Carroll, Elaine Buckley, Darragh Mogili V., Vishnu N. McNulty, David Moreno, Mario Sergio Jesus Glynn, Colm Collins, Gillian Holmes, Justin D. Razeeb, Kafil M. O'Dwyer, Colm 2019-02-22T15:40:16Z 2017-09-09
dc.identifier.citation Carroll, Elaine; Buckley, Darragh; Mogili V., Vishnu N.; McNulty, David; Moreno, Mario Sergio Jesus; et al.; 2D Nanosheet Paint from Solvent-Exfoliated Bi2Te3 Ink; American Chemical Society; Chemistry Of Materials; 29; 17; 9-9-2017; 7390-7400
dc.identifier.issn 0897-4756
dc.description.abstract Embedding 2D layered materials into polymers and other materials as composites has resulted in the development of ultrasensitive pressure sensors, tunable conductive stretchable polymers, and thermoelectric coatings. As a wettable paint or ink, many 2D materials may be penciled, printed, or coated onto a range of surfaces for a variety of applications. However, the intrinsic conductive properties of painted coatings using 2D and layered materials are not completely understood, and conductive polymer additives may mask underlying properties such as directional conductivity. We report a process for making a paint from solvent-exfoliated Bi2Te3 into solution-dispersible 2D and few-layer (multiple quintuple) nanosheet inks, that form smooth, uniform paint blends at several concentrations of Bi2Te3. The individual solvent-exfoliated nanosheets are edge-coated by (poly)ethylene glycol to produce a paint, stable over extended period in solution. Electrical transport is found to be sensitive to aspect ratio, and conduction along the painting direction is suppressed for longer strips so long as the aspect ratio is high (4-10× or more), but for short and wide paint strips (aspect ratio ≤1), conductance is improved by a factor of 3×. Square 2D paint regions show no clear directional preference for conductance at room temperature but are markedly affected by higher temperatures. Conductivity along a preferential conduction pathway through the nanosheet ensemble is modulated by 2D nanosheet stacking along the direction of paint application for a given aspect ratio. This paint and insights into geometrical 2D composite conduction may have implications for conductive composites, thermoelectrics, and writable circuits using 2D material paints or inks.
dc.format application/pdf
dc.language.iso eng
dc.publisher American Chemical Society
dc.rights info:eu-repo/semantics/restrictedAccess
dc.subject Bi2Te3
dc.subject 2D nanosheet
dc.subject 2D layered materials
dc.subject.classification Nano-materiales
dc.subject.classification Nanotecnología
dc.subject.classification INGENIERÍAS Y TECNOLOGÍAS
dc.title 2D Nanosheet Paint from Solvent-Exfoliated Bi2Te3 Ink
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion 2019-02-12T14:32:51Z
dc.journal.volume 29
dc.journal.number 17
dc.journal.pagination 7390-7400
dc.journal.pais Estados Unidos
dc.journal.ciudad Nueva York
dc.description.fil Fil: Carroll, Elaine. University College Cork; Irlanda
dc.description.fil Fil: Buckley, Darragh. University College Cork; Irlanda
dc.description.fil Fil: Mogili V., Vishnu N.. Centro Nacional de Pesquisa em Energia e Materiais. Brazilian Nanotechnology National Laboratory; Brasil
dc.description.fil Fil: McNulty, David. University College Cork; Irlanda
dc.description.fil Fil: Moreno, Mario Sergio Jesus. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
dc.description.fil Fil: Glynn, Colm. University College Cork; Irlanda
dc.description.fil Fil: Collins, Gillian. University College Cork; Irlanda
dc.description.fil Fil: Holmes, Justin D.. University College Cork; Irlanda. Tyndall National Institute; Irlanda. Trinity College Dublin; Irlanda
dc.description.fil Fil: Razeeb, Kafil M.. Tyndall National Institute; Irlanda
dc.description.fil Fil: O'Dwyer, Colm. University College Cork; Irlanda. Tyndall National Institute; Irlanda
dc.journal.title Chemistry Of Materials
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/
dc.conicet.fuente Elsevier

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